Welcome, Lifehackers, to our next Hacker Challenge! Each week, we issue a new challenge. You get until Sunday to prepare your submission and send it to us. That gives you a few days to think about it and a whole weekend to work it up. Our editors pick the best submissions and our favorite will win an autographed copy of the Lifehacker book!

Let's get started!

Update: This challenge has ended, but be sure to check out the results!

Now, it's your turn. We want to see your best space-saving hack for your office. Whether it's a clever storage solution, a way to get stuff off your desk, or some way of making things easier to find, show us what you've come up with.

How to Submit Your Entry

Make sure to follow these instructions when you submit your entry:

Post your entry below or send it to challenge@lifehacker.com with the subject Hacker Challenge: Space Saving Office Hack. If you post your entry below and need to include more than one image, just reply to your own comment or host your extra pics on a free, quick image-hosting site like imgur and link out to your gallery.

We will accept entries up through Sunday night, February 3 at 11:59pm Pacific Standard Time

We will showcase the best submissions and announce our favorite Monday, February 4.

Break out your tools and get to work! And don't forget to check back for new challenges every week.